STMicroelectronics Announces Compact Motion Sensor to Enhance Comfort and Measurement Accuracy in Medical Wearable and Implantable Devices

STMicroelectronics has introduced the MIS2DU12, a MEMS accelerometer that combines ultra-low power consumption, signal processing capabilities, and an ultra-compact size, making it ideal for medical wearable and implantable devices.
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  • 📰 Published: March 30, 2026 at 07:00
STMicroelectronics (NYSE: STM) has announced the MIS2DU12, a MEMS accelerometer that combines ultra-low power consumption, signal processing capabilities, and an ultra-compact size, making it ideal for medical wearable and implantable devices.

Produced with biocompatible materials and manufacturing processes, the MIS2DU12 features a current consumption of just 20nA in power-down mode and less than 1µA in active mode, enabling long operational life in implantable devices such as heart monitors and pacemakers. Its thinness of just 0.74mm and a 2 x 2mm footprint also allow for ultra-thin, lightweight patch sensors with improved comfort.

In patch sensors like blood glucose monitors and other biometric parameter sensors, the sensor fusion of the MIS2DU12 maintains high accuracy even under macroscopic movements and environmental stress. Consequently, these applications benefit from high sensitivity to micro-movements and high power efficiency. It incorporates a dedicated motion processing engine, enabling detection of free-fall, wake-up, single/double taps, and active/inactive states, in addition to 6-axis/4-axis orientation detection. It also includes a self-test function and a temperature sensor.

The MIS2DU12, which integrates motion processing circuitry for event detection and wake-up, is equipped with an anti-aliasing filter to maximize the quality of the output data. This filter removes vibration sources out of the band, reducing the load on the host application processor and lowering the overall system power consumption. The sensor's current consumption is only 0.47μA in an ultra-low-power active mode with a 1.6Hz output data rate, and is kept down to 5.6µA even when operating in normal mode with the anti-aliasing filter enabled.

The MIS2DU12 features a selectable full scale of ±2g / ±4g / ±8g / ±16g, an output data rate from 1.6Hz to 800Hz, and a wide operating temperature range of -40°C to +85°C. It integrates a 128-level FIFO buffer, providing large data storage and excellent flexibility, which contributes to reducing system power consumption.

An adapter board, the STEVAL-MKI255A, is also available to facilitate quick evaluation. This evaluation board, featuring the MIS2DU12 sensor, has a standard DIL24 pinout, allowing it to be used in conjunction with the STEVAL-MKI109D evaluation board. This evaluation board is equipped with a high-performance 32-bit microcontroller and utilizes ST's "MEMS Studio" GUI...